Instruction Video:

Installation instructions Farmer screw/Overlap screw

Façade overlap screw (external) for sheet metal max 2 x 1,25 mm

  • Function: Drill tip for sheet metal up to 2 x 1.25 mm. Sheet metal thread for overlap function. EPDM rubber for watertight seal. The head’s low-profile pan design works superbly when attaching sheet metal to sheet metal externally.
  • Track type bit: TX 20.
  • Material: Case hardened steel and EPDM rubber.
  • Coating: Zinc-plated 20 my. Powder coated with polyester lacquer, for outdoor use.
  • Installation instructions: A power screwdriver with a speed of 1,500-2,500 rpm is recommended.
Unit Guide
D Diameter
D1 Outer diameter
G Thread length
H Head diameter
L Length
M Thickness
MB Mother box
Drill cap. mm Drill capacity mm
Max comp. thick. app. mm Max component thickness application mm
Min. drill depth mm Minimum drill depth mm
Screw dim. mm Screw dimension mm
Surface treat. Surface treatment
D L Colour Art.no E-number Quantity Pack. MB
4.8 23 Black RAL 9005 P683222 100 Plastic box 16
4.8 23 Black RAL 9005 683222 100 Packaging 16
4.8 23 Black RAL 9005 SB683222 10 Pack 10
4.8 23 Brick red RAL 8004 683233 100 Packaging 16
4.8 23 Brick red RAL 8004 SB683233 10 Pack 10
4.8 23 Dark red RAL 3009 683255 100 Packaging 16
4.8 23 Dark red RAL 3009 SB683255 10 Pack 10
4.8 23 Silver RAL 9006 683277 100 Packaging 16
4.8 23 Silver RAL 9006 SB683277 10 Pack 10
4.8 23 White RAL 9010 P683244 100 Plastic box 16
4.8 23 White RAL 9010 683244 100 Packaging 16
4.8 23 White RAL 9010 SB683244 10 Pack 10
NOTE: Packs are only sold in multiples of ten.
  • Information material

    You can order the information material you are interested in here. It will be delivered by post within a few days.